Molding-machine.



E. C. COVERT. MOLDING MACHINE.

APPLICATION nun AUG. 21. 1011.

1,010,023. Patented Nov. 28, 1911.

2 SHEETS-SHEET 1.

B. G. COVERT.

MOLDING MACHINE. APPLIOATIOII FILED AUG. 21, 1911.

Patented Nov. '23, 1911.

2 SHEETS-SHEET B chinc adapted for hand EDSON C. COVERT, 01? CHICAGO,ILLINOIS, ASSIGNOR PATENT OFFICE.

TO AMERICAN STEEL FOUNDRIES OF NEW YORK, N. Y., A CORPORATION OF NEWJERSEY.

MOLDING-MACHINE.

I Specification of Letters lntent.

Patented Nov. 28, 1911.

Application med August 21, 1911. -Serlal in. 645,239.

To all whom i! may concern:

Be it known that l. Eusox (lovnn'r, of Chicago, county of (look, andState of Illinois, have 'inu'nlml certain new and useful Improvements inMolding- Machines, of whlchthe followin is a specification.

My invention relhtes to the art of molding and has particularlyreference to a machine adapted for use In the handling of flasks duringthe making of the molds.

My invention relates particularly to a maing large and heavy flaskswherein castings of many hundred undswciight are, formed. It iscontemilgted in he employment of a device as c ein shown thatallask maybe set, sand flas with one cycle of operations.

One of the principal obiyects of the inven tion is to produce a macllllellf this char-- vide such a-construction that the princlpalportions the machine will be balanced by the equal istribution of theweight of the pattern plates and flasks so that but little outside powerwill be required for the operation of the machine, while at the saiuctime each pattern plate has an unequal distribution of its weight. sothat when free to rotate it is automatically brought to the desiredpositions.

.My invention will he stood by reference to drawings, wherein,

Figure 1 is an end elevation partly in section, showing my improvcd'molding machine; Fig. 2 is a front elevation also partly more readilyunderthe accompanying in section, showing the same machine, and

-wheels 13 and 13, the 55 Fig. 3 is an enlarged detail of the mutilatedgear required for the operation of the device.

Referring more particularly to the drawings it will be seen that on thesupports 10 I mount a plurality of supporting wheels or rollers 11,which canry the weight of the superposed machinery. secured to each endthereof large cast rims 0 which bear upon the wheels orrollers 11, thewheels 11 appliied, pi-operly rammed or jolted and thecontained moldremoved, all in shaft 12" and A furtlfierobject of my invention is toproeach the c A hollow shaft 12 has b being grooved therefor. The wheels13 and 13 are preferably rotated by hand although they may be driven bypower suitabl applied if desired. The large wheels 1' and 13, areprovided with radial spokes 14, terminatin at their inner ends in a hub15. The spo es of the wheel 13 carrfyjbcarings 16, within which aremounted sha ts 17, having beveled pinions 18, 19 on their ends, the

'pinions 19, as shown in Fig. 3,'being |nutilated,-or having a portionof the gear teeth removed, for apurposc later to be described.

It will be seen that there nre'in the prescnt instance four shafts 17,four pinions 18 and four pinions 19 The pinions, 18 all mesh witha'beveled pinion 20, keye'dto hollow shaft 12*.which projects into theend of hollow 'shaft12, through support 22. This gear 20 remainstationary durin the operation of the machine.

[he wheels 13 and 13 near their eriphcries, are rovided with elongatedarmg slots 23. o'unted' within the slotted openings 23 are shafts 24,each of which has a pinion 25 secured to one end thereof, .said pinionadapted to mesh with a corres 0ndmg miitilatcd pinion 19. These sha ts24 carry metal pattern plates 25', the pattern plates having on theirupper faces the design or shape of'the casting to be produced. '1 esejections or lugs 26 so arranged that the pattern plate, w ien rec of asuperposed flask, will normally right itself,.as shown in the positionsA; B and C of Fig. 2. These lugs when the pattern plate is in ositionnot merely .as counter-weights, alt vough they provide legs when theplates any purpose. i

t-wil be-scen from the above description that the shafts 17 andconnected earin provide for parallel motion of the different patternplates as the wheels 13 and 13 rors 19, there willbc a portion of therevoution' of these wheels during which the gears 25 are not in meshwith the gears 19 so that the shaft 24, with its may-rotate freely.Aflask 27 is shown on pattern plate, being secured thereto by amps 28.These clamps are actuated y means of fluid pressure cylinders 29,connected by an air hose .30, to the'shaft 12, which is hollow and whichis connected through shaft 12' to a suitable source of pattern platesaroprovided with propattern plate-,-

are removed for late. and that due to the mutilation of the fluidpressure, not shown. This clamp is shown and described in detail in mycopending application, Serial No. 648 789' filed Sept. 11 1911, entitledClamps for flasks, In order to provide sand to the flasks, I may usesand reservoirs as shown in Fig. 2.

jolter by means of cables 36, thme'cables 20 P assing over a sleeve 37,which sleeve incloses shaft 12. On the end of sleeve 37 is mounted ear37 with which a pinion 37" is in mes pinion al" is in turni'igidlmounted on a stub shaft passing throng wheel 13, the'pinion 379 beingmounted on the outer end of this stub shaft. Pinion 37 is in mesh 'withgear 37 which is rigidly mounted on shaft 37' on the outer-end ofwhichis rigidly mounted pinion 38 in mesh with rack 39. Shaft 37' at itsposition between gear 37 and pinion 38 passes, through bracket 22 and onits inner end extends into the end of shaft 12. Back'39 is connected tothe piston of an air cylinder-40; In order to raise or lower the grid,airis admitted to one or the other of the sides *of the piston, thisactuating the rack and causing the rotation of the sleeve'37 (throughthe gears and inions just described) and causing the win ing or unwindin-of the cable thereon.

In order to provi e for the removal of the flasks and contained mold, Iprovide a hydraulic cylinder 41, having a platform 42 thereon, thisplatform carrying tracks 43, registering with permanent tracks *4, onwhich a car 45 is adapted to be carried. It

will be seen that the shafts 24 areadapted for movemenlgwithin theslotted bearings 23, and in order to restrain the shafts and keep themin their proper positions; I provide dplugs or fillers 46, which may beinserte into and fill the portions of the slotted bearingsnot occupiedby, the} ends of shafts 24. l

The operation of the machine is asfollows: It will be seen that in theposition I) a flask and pattern plate are m reve position and a, car 45on platform 42 is ele vated by the action of cylinder 41 to. receive theflask and remove the same after the releasing of theclamps 28. After theflask is removed, the pattern late 25', due to the wei ht oflu 26, wilautomatically right itse f. A fias is then placed onthe pattern plate byan suitable means suchuse crane *a'nd remain for automatically maintaand after being suitably fastened thereon, the device 15 caused torotate. While in the position D, the. gears 25 and 19 are not m mesh,due to t e mutilation of gear l9. Howeve as soon as rotation of thedevice has be e gears are brought into mesh mesh until position G isreached. When the device has .been rotated until we ask is beneath thesand hoppers, sand is dmitted to fill the flask and the rotation is thencontinued until sition C is reached. At this oint the olter 34 iselevated, t{1us lifting t e weight of the flask and pa tern plate andrmitting the remova o the fillers46. he 3:51; agdbecontained 31a dda1then joltteld,

e' in wer an y upon e top I)? the sail After being j o1ted sufliciently,the jolter is elevated to permit the insertion of the fillers 46 and therotation again continued. However, as the gears 19 and 25 are not inmesh due to the mutilation of the former, the flask and the patternplate will automatically turn bottom up, due

to the fact that the flask is heavier than the pattern plate. In thisposition the flask will arrive at position D, and after being unclamped,will 'be removed y the car 45.

It will be understood that the operation just described deals witlilonlyone moldin operation and that while the steps descri are being-carriedout, the same steps are also beingcarried out in pro r v sequence u"npther flaslrsjcarried by t 0 same ma- .c' inc and that thd operationsare continw' one. It 'will alsdbe understood that the mechanism hereinshown is only typical and that many modifications may be made thereinwithout departure from the spirit of my invention.

Iclaim: I 1. In a device of the class described, the

means for automatically maintaining said patte'rn plate in a successionof parallel planes during the rotation of said member, substantially asdescribed. a

2.. In a device of the class described, the combination of a rotatablemember, a-pattern plate carried by said ember, means said pattern plate,in a succession of p a] el planes durng the rotation of said member, andmeans for allowin the free rotation of said pat- ,te'rn plate uring aportion of the rotation combination of a'rotatable member, a patternplate carried by said member, and

of said member, substantially as described' B. In a device of theclassdescribed, the combihation of a rotatable member, a pattern platecarried ,by said member, means for automatically maintainin said patternlate in a succession of paral e1 planes durin the rotation of saidinemmeans for al owing the free rotation of said pattern plate on its onaxis during a portion of the rotation of said member, and balancingmeans whereby said pattern plate, when free to rotate,will-automatically adjust it-- self in a predetermined position,substantially as described.

4. In a device of the class described, the combination of a rotatablewheel, a pattern plate rotatably mounted on said wheel, a gear on saidpattern plate, and a second gear mounted on said wheel and in mesh withthe gear of said pattern plate whereby the latter will be maintained ina succession of parallel planes during the rotation of said wheel,substantially as described.

5. In a molding machine, the combination of a rotatablewheel, a patternplate rotatably mounted' on sa'id wheel, a gear associated with saidpattern plate, a second gear mounted on said wheel and in mesh with thegear of said pattern plate, and means for rotating said sccond gearwhereby said pattern plate will be maintained in horizontal positionduring the rotation of said wheel. substantially as described.

6. In a molding machine, the combination of a rotatable wheel, a patternplate rot-w tably mounted on said wheel, a gear associated with saidpattern plate, a second gear in mesh with the gear of said patternplate, it rel" "ively stationary gear, and means connecting saidstationary gear with said serond gear whereby when said wheel is rotatedsaid pattern plate will be maintained in a succession of parallelplanes, substan tially as described.

T. In a molding machine, the combination of a rotatable wheel, aplurality of pattern plates rotatably mounted on said wheel, and meansfor maintaining said pattern plates in parallel positions during therotation of said wheel, substantially described.

.8. In a molding machine, the combination of a. rotatable wheel, aplurality of pattern plates rotatably mounted on said wheel, a gearassociated with each of said pattern plates, a plurality of gearscarried by said wheel and in mesh with the respective gears of saidpattern plates, and means for aetw ating the gears carried by said wheeltlllt' ing the rotation of the latter whereby said pattern plates willbe maintained in parallel positions, substantially as described.

9. Ina molding machine. the (ZOII'lblIlllllUIl of a rotatable wheel. apattern plate rotatably carried by said wheel, a gear associated withsaid pattern plate, a'second gear carried by said wheel and in mesh withthe gear of said pattern plate, said gear having a portion of itsperiphery mutilated, and means for actuating said second gear dur' ingthe rotation of said wheel whereby said pattern plate will be maintainedin a succession of parallel planes while said second gear is in meshwith the gear of said pat tern plate and said pattern plate will be freeto rotate when the mutilated portion of said second gear is brought intoregister with the gear ol' the pattern plate, substantially asdescribed.

10. la a molding machine, the combination of a frame, a rotatable wheelcarried by said frame, a pattern plate rotatably mounted on said wheel,a gear associated with said pattern plate, a shaft carried by saidwheel, a pair ol gear-son opposite ends of said shaft, one of said gearsbeing in mesh with the gear of said pattern plate, and a relativelystationary gear in mesh with the gear mounted on the opposite end ofsaid shaft whereb when said Wheel is rotated said pattern p ate will bemaintained in a succession of parallel planes, substantially asdescribed.

11. In a molding machine, the combination of a rotatable wheel, apattern plate rotatably mounted on said wheel, removable means formaintaining the axis of said pattern plate at a pre-determined distancefrom the axis of said wheel the removal of said means allowing radialmovement of said pattern plate, and means for jotting said pattern platewhen the wheel is rotated to a pre-determined position and saidremovable means are withdrawn, substantially as described.

12. In a molding machine, the combination oi a rotatable wheel, apattern plate rotatably mounted on said wheel. means for supplying sandto said pattern plate, means for jolting the sand on said pattern platewhen said wheel is rotated to a pro-determined position, and packingmeans adapted to be lowered on to the sand on said pattern plate,substantially as described.

13. In a molding machine, the combination of a rotatable wheel, apattern plate rotatably carried on said wheel, removable means forholding said pattern plate in a pre-detern'iincd radial position, meansfor supplying sand to the surface of said pattern plate, a sand packinggrid, means for lowering said grid on to the sand on said pattern platewhen said wheel is rotated to a predetermined position, and means forjolting said pattern plate on the withdrawal of said removable means,substantially as described,

l-l. molding machine comprising, in combinaticn. a base, a multiplepattern carrier movable with relation to said base, means forn'iaintaining said patterns in parallelism during a portion of thetravel of said carrier, means for supplying sand to said patterns, meansfor jolting sand on said pattern, and means for drawing said patterns,substantially as described.

15. A molding machine, comprising in combination, a multiple rotarypattern carltll) rier movable with relation to said base, 1

allelism during a portion of the travel of said carrier, means forsupplying sand to said patterns, means for jolting sand on said pattern,and means for drawing said patterns, substantially as described.

16. A molding machine comprising, in con'lbination, a base, a multiplerotary pattern carrier mounted on said base, said pattern carrierincluding parallel motion means whereby said patterns are maintained inparallel relatibn, flasks for said pattern. means for securing saidflasks over said patterns, means for supplying sand to said flasks,means for jolting sand in said flasks, and means for drawing saidpatterns, substantially as described.

17. A molding machine com rising, in combination, a base havinganti-Eietion elements thereon, end wheels carried by said anti-frictionelements 'on said base, said wheels being joined by shafts, patternplates carried by said shafts, and a parallel motion device carried byone of said wheels and arranged to maintain said pattern plates inparallel relation during a portion of the travel of said Wheels,substantially as described.

18. A. molding machine com rising, in combinat on, a base havlngantinotion elements thereon, end wheels having radial slots rotatablymounted on said anti-friction elements, shafts connecting said wheelsand seated in said slots, pattern plates carried by said shafts, andmeans for maintaining said pattern plates in parallel relation during aportion of the travel of said wheels, substantially as described.

19. A molding machine com rising, in combination, a base havingantiriot-ion elements thereon, radially slotted wheels cooperating withsaid anti-friction elements, shafts seated in slots in said Wheels, saidshafts carrying pattern plates and being provided with a gear on one endthereof, mutilated gears carried by one end wheel and meshing with theears on the ends of said shafts whereby said pattern plates aremaintained in parallel relation during a portion of the travel of saidWheel, substantially as described.

I EDSON C. COVERT. Witnesses:

J. A. Hrooms, WM. P. Anson.

